IB Biology HL C3.2.2 Skin and Mucous Membranes Questions

Skin and mucous membranes provide primary defences. Physical barriers and substances such as gastric acid and lysozyme limit pathogen entry or destroy pathogens in IB Biology HL C3.2.2.

Exam points

Explain how skin and mucus form barriers to pathogen entry and how gastric acid or lysozyme destroy pathogens at body surfaces.

[Maximum number: 2]

Pathogens are disease-causing organisms.

State two of the body's primary defences to pathogens.

All question bank results loaded

IB Biology HL C3.2.2 Skin and Mucous Membranes Questions question 1